-3a-3(a+4)=12(a+5)

Simple and best practice solution for -3a-3(a+4)=12(a+5) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -3a-3(a+4)=12(a+5) equation:


Simplifying
-3a + -3(a + 4) = 12(a + 5)

Reorder the terms:
-3a + -3(4 + a) = 12(a + 5)
-3a + (4 * -3 + a * -3) = 12(a + 5)
-3a + (-12 + -3a) = 12(a + 5)

Reorder the terms:
-12 + -3a + -3a = 12(a + 5)

Combine like terms: -3a + -3a = -6a
-12 + -6a = 12(a + 5)

Reorder the terms:
-12 + -6a = 12(5 + a)
-12 + -6a = (5 * 12 + a * 12)
-12 + -6a = (60 + 12a)

Solving
-12 + -6a = 60 + 12a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-12a' to each side of the equation.
-12 + -6a + -12a = 60 + 12a + -12a

Combine like terms: -6a + -12a = -18a
-12 + -18a = 60 + 12a + -12a

Combine like terms: 12a + -12a = 0
-12 + -18a = 60 + 0
-12 + -18a = 60

Add '12' to each side of the equation.
-12 + 12 + -18a = 60 + 12

Combine like terms: -12 + 12 = 0
0 + -18a = 60 + 12
-18a = 60 + 12

Combine like terms: 60 + 12 = 72
-18a = 72

Divide each side by '-18'.
a = -4

Simplifying
a = -4

See similar equations:

| 15x+29=5x+199 | | y=-2x+10x-20 | | -x^3=8 | | 8(z+4)=5(13+z)3 | | 2(4x+3)=(4x+12) | | 4x+6x+2+7=3x+5+6x | | 37+x-15=63 | | -7x+20=118 | | 2=7v+4(v-7) | | 5x-6=6x-30 | | x(x+2)=141 | | 2(3x+1)+31=21 | | 90/600 | | 7x-9=2x+51 | | 3xa-2=2a | | 45a+210b=93000 | | -9=-y-48 | | 9m-28=2 | | 3/4x=7.50 | | -7x-21=24-10x | | -7x-21=24-10 | | -3=7-n | | 3(8x+4)=(10x-9) | | 2/9g:-8 | | 6x+6+3x-6=180 | | -13=-7+3y | | 5n+30=1.20 | | 5w+13=93 | | -5=-8-n | | A=7*1-7*2y | | 2p+15= | | 4x-4(-3x+5)=-3 |

Equations solver categories